diff options
Diffstat (limited to 'mesalib/src/glsl/glsl_lexer.ll')
| -rw-r--r-- | mesalib/src/glsl/glsl_lexer.ll | 453 |
1 files changed, 453 insertions, 0 deletions
diff --git a/mesalib/src/glsl/glsl_lexer.ll b/mesalib/src/glsl/glsl_lexer.ll new file mode 100644 index 000000000..e6f45f413 --- /dev/null +++ b/mesalib/src/glsl/glsl_lexer.ll @@ -0,0 +1,453 @@ +%{
+/*
+ * Copyright © 2008, 2009 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+#include <ctype.h>
+#include "strtod.h"
+#include "ast.h"
+#include "glsl_parser_extras.h"
+#include "glsl_parser.h"
+
+static int classify_identifier(struct _mesa_glsl_parse_state *, const char *);
+
+#define YY_USER_ACTION \
+ do { \
+ yylloc->source = 0; \
+ yylloc->first_column = yycolumn + 1; \
+ yylloc->first_line = yylineno + 1; \
+ yycolumn += yyleng; \
+ } while(0);
+
+#define YY_USER_INIT yylineno = 0; yycolumn = 0;
+
+#define IS_UINT (yytext[yyleng - 1] == 'u' || yytext[yyleng - 1] == 'U')
+
+/* A macro for handling reserved words and keywords across language versions.
+ *
+ * Certain words start out as identifiers, become reserved words in
+ * later language revisions, and finally become language keywords.
+ *
+ * For example, consider the following lexer rule:
+ * samplerBuffer KEYWORD(130, 140, SAMPLERBUFFER)
+ *
+ * This means that "samplerBuffer" will be treated as:
+ * - a keyword (SAMPLERBUFFER token) ...in GLSL >= 1.40
+ * - a reserved word - error ...in GLSL >= 1.30
+ * - an identifier ...in GLSL < 1.30
+ */
+#define KEYWORD(reserved_version, allowed_version, token) \
+ do { \
+ if (yyextra->language_version >= allowed_version) { \
+ return token; \
+ } else if (yyextra->language_version >= reserved_version) { \
+ _mesa_glsl_error(yylloc, yyextra, \
+ "Illegal use of reserved word `%s'", yytext); \
+ return ERROR_TOK; \
+ } else { \
+ yylval->identifier = strdup(yytext); \
+ return classify_identifier(yyextra, yytext); \
+ } \
+ } while (0)
+
+/* The ES macro can be used in KEYWORD checks:
+ *
+ * word KEYWORD(110 || ES, 400, TOKEN)
+ * ...means the word is reserved in GLSL ES 1.00, while
+ *
+ * word KEYWORD(110, 130 || ES, TOKEN)
+ * ...means the word is a legal keyword in GLSL ES 1.00.
+ */
+#define ES yyextra->es_shader
+%}
+
+%option bison-bridge bison-locations reentrant noyywrap
+%option nounput noyy_top_state
+%option never-interactive
+%option prefix="_mesa_glsl_"
+%option extra-type="struct _mesa_glsl_parse_state *"
+
+%x PP PRAGMA
+
+DEC_INT [1-9][0-9]*
+HEX_INT 0[xX][0-9a-fA-F]+
+OCT_INT 0[0-7]*
+INT ({DEC_INT}|{HEX_INT}|{OCT_INT})
+SPC [ \t]*
+SPCP [ \t]+
+HASH ^{SPC}#{SPC}
+%%
+
+[ \r\t]+ ;
+
+ /* Preprocessor tokens. */
+^[ \t]*#[ \t]*$ ;
+^[ \t]*#[ \t]*version { BEGIN PP; return VERSION; }
+^[ \t]*#[ \t]*extension { BEGIN PP; return EXTENSION; }
+{HASH}line{SPCP}{INT}{SPCP}{INT}{SPC}$ {
+ /* Eat characters until the first digit is
+ * encountered
+ */
+ char *ptr = yytext;
+ while (!isdigit(*ptr))
+ ptr++;
+
+ /* Subtract one from the line number because
+ * yylineno is zero-based instead of
+ * one-based.
+ */
+ yylineno = strtol(ptr, &ptr, 0) - 1;
+ yylloc->source = strtol(ptr, NULL, 0);
+ }
+{HASH}line{SPCP}{INT}{SPC}$ {
+ /* Eat characters until the first digit is
+ * encountered
+ */
+ char *ptr = yytext;
+ while (!isdigit(*ptr))
+ ptr++;
+
+ /* Subtract one from the line number because
+ * yylineno is zero-based instead of
+ * one-based.
+ */
+ yylineno = strtol(ptr, &ptr, 0) - 1;
+ }
+^{SPC}#{SPC}pragma{SPCP}debug{SPC}\({SPC}on{SPC}\) {
+ BEGIN PP;
+ return PRAGMA_DEBUG_ON;
+ }
+^{SPC}#{SPC}pragma{SPCP}debug{SPC}\({SPC}off{SPC}\) {
+ BEGIN PP;
+ return PRAGMA_DEBUG_OFF;
+ }
+^{SPC}#{SPC}pragma{SPCP}optimize{SPC}\({SPC}on{SPC}\) {
+ BEGIN PP;
+ return PRAGMA_OPTIMIZE_ON;
+ }
+^{SPC}#{SPC}pragma{SPCP}optimize{SPC}\({SPC}off{SPC}\) {
+ BEGIN PP;
+ return PRAGMA_OPTIMIZE_OFF;
+ }
+^{SPC}#{SPC}pragma{SPCP}STDGL{SPCP}invariant{SPC}\({SPC}all{SPC}\) {
+ BEGIN PP;
+ return PRAGMA_INVARIANT_ALL;
+ }
+^{SPC}#{SPC}pragma{SPCP} { BEGIN PRAGMA; }
+
+<PRAGMA>\n { BEGIN 0; yylineno++; yycolumn = 0; }
+<PRAGMA>. { }
+
+<PP>\/\/[^\n]* { }
+<PP>[ \t\r]* { }
+<PP>: return COLON;
+<PP>[_a-zA-Z][_a-zA-Z0-9]* {
+ yylval->identifier = strdup(yytext);
+ return IDENTIFIER;
+ }
+<PP>[1-9][0-9]* {
+ yylval->n = strtol(yytext, NULL, 10);
+ return INTCONSTANT;
+ }
+<PP>\n { BEGIN 0; yylineno++; yycolumn = 0; return EOL; }
+
+\n { yylineno++; yycolumn = 0; }
+
+attribute return ATTRIBUTE;
+const return CONST_TOK;
+bool return BOOL_TOK;
+float return FLOAT_TOK;
+int return INT_TOK;
+uint KEYWORD(130, 130, UINT_TOK);
+
+break return BREAK;
+continue return CONTINUE;
+do return DO;
+while return WHILE;
+else return ELSE;
+for return FOR;
+if return IF;
+discard return DISCARD;
+return return RETURN;
+
+bvec2 return BVEC2;
+bvec3 return BVEC3;
+bvec4 return BVEC4;
+ivec2 return IVEC2;
+ivec3 return IVEC3;
+ivec4 return IVEC4;
+uvec2 KEYWORD(130, 130, UVEC2);
+uvec3 KEYWORD(130, 130, UVEC3);
+uvec4 KEYWORD(130, 130, UVEC4);
+vec2 return VEC2;
+vec3 return VEC3;
+vec4 return VEC4;
+mat2 return MAT2X2;
+mat3 return MAT3X3;
+mat4 return MAT4X4;
+mat2x2 KEYWORD(120, 120, MAT2X2);
+mat2x3 KEYWORD(120, 120, MAT2X3);
+mat2x4 KEYWORD(120, 120, MAT2X4);
+mat3x2 KEYWORD(120, 120, MAT3X2);
+mat3x3 KEYWORD(120, 120, MAT3X3);
+mat3x4 KEYWORD(120, 120, MAT3X4);
+mat4x2 KEYWORD(120, 120, MAT4X2);
+mat4x3 KEYWORD(120, 120, MAT4X3);
+mat4x4 KEYWORD(120, 120, MAT4X4);
+
+in return IN_TOK;
+out return OUT_TOK;
+inout return INOUT_TOK;
+uniform return UNIFORM;
+varying return VARYING;
+centroid KEYWORD(120, 120, CENTROID);
+invariant KEYWORD(120 || ES, 120 || ES, INVARIANT);
+flat KEYWORD(130 || ES, 130, FLAT);
+smooth KEYWORD(130, 130, SMOOTH);
+noperspective KEYWORD(130, 130, NOPERSPECTIVE);
+
+sampler1D return SAMPLER1D;
+sampler2D return SAMPLER2D;
+sampler3D return SAMPLER3D;
+samplerCube return SAMPLERCUBE;
+sampler1DArray KEYWORD(130, 130, SAMPLER1DARRAY);
+sampler2DArray KEYWORD(130, 130, SAMPLER2DARRAY);
+sampler1DShadow return SAMPLER1DSHADOW;
+sampler2DShadow return SAMPLER2DSHADOW;
+samplerCubeShadow KEYWORD(130, 130, SAMPLERCUBESHADOW);
+sampler1DArrayShadow KEYWORD(130, 130, SAMPLER1DARRAYSHADOW);
+sampler2DArrayShadow KEYWORD(130, 130, SAMPLER2DARRAYSHADOW);
+isampler1D KEYWORD(130, 130, ISAMPLER1D);
+isampler2D KEYWORD(130, 130, ISAMPLER2D);
+isampler3D KEYWORD(130, 130, ISAMPLER3D);
+isamplerCube KEYWORD(130, 130, ISAMPLERCUBE);
+isampler1DArray KEYWORD(130, 130, ISAMPLER1DARRAY);
+isampler2DArray KEYWORD(130, 130, ISAMPLER2DARRAY);
+usampler1D KEYWORD(130, 130, USAMPLER1D);
+usampler2D KEYWORD(130, 130, USAMPLER2D);
+usampler3D KEYWORD(130, 130, USAMPLER3D);
+usamplerCube KEYWORD(130, 130, USAMPLERCUBE);
+usampler1DArray KEYWORD(130, 130, USAMPLER1DARRAY);
+usampler2DArray KEYWORD(130, 130, USAMPLER2DARRAY);
+
+
+struct return STRUCT;
+void return VOID_TOK;
+
+layout {
+ if ((yyextra->language_version >= 140)
+ || yyextra->AMD_conservative_depth_enable
+ || yyextra->ARB_explicit_attrib_location_enable
+ || yyextra->ARB_fragment_coord_conventions_enable) {
+ return LAYOUT_TOK;
+ } else {
+ yylval->identifier = strdup(yytext);
+ return IDENTIFIER;
+ }
+ }
+
+\+\+ return INC_OP;
+-- return DEC_OP;
+\<= return LE_OP;
+>= return GE_OP;
+== return EQ_OP;
+!= return NE_OP;
+&& return AND_OP;
+\|\| return OR_OP;
+"^^" return XOR_OP;
+"<<" return LEFT_OP;
+">>" return RIGHT_OP;
+
+\*= return MUL_ASSIGN;
+\/= return DIV_ASSIGN;
+\+= return ADD_ASSIGN;
+\%= return MOD_ASSIGN;
+\<\<= return LEFT_ASSIGN;
+>>= return RIGHT_ASSIGN;
+&= return AND_ASSIGN;
+"^=" return XOR_ASSIGN;
+\|= return OR_ASSIGN;
+-= return SUB_ASSIGN;
+
+[1-9][0-9]*[uU]? {
+ yylval->n = strtol(yytext, NULL, 10);
+ return IS_UINT ? UINTCONSTANT : INTCONSTANT;
+ }
+0[xX][0-9a-fA-F]+[uU]? {
+ yylval->n = strtol(yytext + 2, NULL, 16);
+ return IS_UINT ? UINTCONSTANT : INTCONSTANT;
+ }
+0[0-7]*[uU]? {
+ yylval->n = strtol(yytext, NULL, 8);
+ return IS_UINT ? UINTCONSTANT : INTCONSTANT;
+ }
+
+[0-9]+\.[0-9]+([eE][+-]?[0-9]+)?[fF]? {
+ yylval->real = glsl_strtod(yytext, NULL);
+ return FLOATCONSTANT;
+ }
+\.[0-9]+([eE][+-]?[0-9]+)?[fF]? {
+ yylval->real = glsl_strtod(yytext, NULL);
+ return FLOATCONSTANT;
+ }
+[0-9]+\.([eE][+-]?[0-9]+)?[fF]? {
+ yylval->real = glsl_strtod(yytext, NULL);
+ return FLOATCONSTANT;
+ }
+[0-9]+[eE][+-]?[0-9]+[fF]? {
+ yylval->real = glsl_strtod(yytext, NULL);
+ return FLOATCONSTANT;
+ }
+[0-9]+[fF] {
+ yylval->real = glsl_strtod(yytext, NULL);
+ return FLOATCONSTANT;
+ }
+
+true {
+ yylval->n = 1;
+ return BOOLCONSTANT;
+ }
+false {
+ yylval->n = 0;
+ return BOOLCONSTANT;
+ }
+
+
+ /* Reserved words in GLSL 1.10. */
+asm KEYWORD(110 || ES, 999, ASM);
+class KEYWORD(110 || ES, 999, CLASS);
+union KEYWORD(110 || ES, 999, UNION);
+enum KEYWORD(110 || ES, 999, ENUM);
+typedef KEYWORD(110 || ES, 999, TYPEDEF);
+template KEYWORD(110 || ES, 999, TEMPLATE);
+this KEYWORD(110 || ES, 999, THIS);
+packed KEYWORD(110 || ES, 999, PACKED_TOK);
+goto KEYWORD(110 || ES, 999, GOTO);
+switch KEYWORD(110 || ES, 130, SWITCH);
+default KEYWORD(110 || ES, 130, DEFAULT);
+inline KEYWORD(110 || ES, 999, INLINE_TOK);
+noinline KEYWORD(110 || ES, 999, NOINLINE);
+volatile KEYWORD(110 || ES, 999, VOLATILE);
+public KEYWORD(110 || ES, 999, PUBLIC_TOK);
+static KEYWORD(110 || ES, 999, STATIC);
+extern KEYWORD(110 || ES, 999, EXTERN);
+external KEYWORD(110 || ES, 999, EXTERNAL);
+interface KEYWORD(110 || ES, 999, INTERFACE);
+long KEYWORD(110 || ES, 999, LONG_TOK);
+short KEYWORD(110 || ES, 999, SHORT_TOK);
+double KEYWORD(110 || ES, 400, DOUBLE_TOK);
+half KEYWORD(110 || ES, 999, HALF);
+fixed KEYWORD(110 || ES, 999, FIXED_TOK);
+unsigned KEYWORD(110 || ES, 999, UNSIGNED);
+input KEYWORD(110 || ES, 999, INPUT_TOK);
+output KEYWORD(110 || ES, 999, OUTPUT);
+hvec2 KEYWORD(110 || ES, 999, HVEC2);
+hvec3 KEYWORD(110 || ES, 999, HVEC3);
+hvec4 KEYWORD(110 || ES, 999, HVEC4);
+dvec2 KEYWORD(110 || ES, 400, DVEC2);
+dvec3 KEYWORD(110 || ES, 400, DVEC3);
+dvec4 KEYWORD(110 || ES, 400, DVEC4);
+fvec2 KEYWORD(110 || ES, 999, FVEC2);
+fvec3 KEYWORD(110 || ES, 999, FVEC3);
+fvec4 KEYWORD(110 || ES, 999, FVEC4);
+sampler2DRect return SAMPLER2DRECT;
+sampler3DRect KEYWORD(110 || ES, 999, SAMPLER3DRECT);
+sampler2DRectShadow return SAMPLER2DRECTSHADOW;
+sizeof KEYWORD(110 || ES, 999, SIZEOF);
+cast KEYWORD(110 || ES, 999, CAST);
+namespace KEYWORD(110 || ES, 999, NAMESPACE);
+using KEYWORD(110 || ES, 999, USING);
+
+ /* Additional reserved words in GLSL 1.20. */
+lowp KEYWORD(120, 130 || ES, LOWP);
+mediump KEYWORD(120, 130 || ES, MEDIUMP);
+highp KEYWORD(120, 130 || ES, HIGHP);
+precision KEYWORD(120, 130 || ES, PRECISION);
+
+ /* Additional reserved words in GLSL 1.30. */
+case KEYWORD(130, 130, CASE);
+common KEYWORD(130, 999, COMMON);
+partition KEYWORD(130, 999, PARTITION);
+active KEYWORD(130, 999, ACTIVE);
+superp KEYWORD(130 || ES, 999, SUPERP);
+samplerBuffer KEYWORD(130, 140, SAMPLERBUFFER);
+filter KEYWORD(130, 999, FILTER);
+image1D KEYWORD(130, 999, IMAGE1D);
+image2D KEYWORD(130, 999, IMAGE2D);
+image3D KEYWORD(130, 999, IMAGE3D);
+imageCube KEYWORD(130, 999, IMAGECUBE);
+iimage1D KEYWORD(130, 999, IIMAGE1D);
+iimage2D KEYWORD(130, 999, IIMAGE2D);
+iimage3D KEYWORD(130, 999, IIMAGE3D);
+iimageCube KEYWORD(130, 999, IIMAGECUBE);
+uimage1D KEYWORD(130, 999, UIMAGE1D);
+uimage2D KEYWORD(130, 999, UIMAGE2D);
+uimage3D KEYWORD(130, 999, UIMAGE3D);
+uimageCube KEYWORD(130, 999, UIMAGECUBE);
+image1DArray KEYWORD(130, 999, IMAGE1DARRAY);
+image2DArray KEYWORD(130, 999, IMAGE2DARRAY);
+iimage1DArray KEYWORD(130, 999, IIMAGE1DARRAY);
+iimage2DArray KEYWORD(130, 999, IIMAGE2DARRAY);
+uimage1DArray KEYWORD(130, 999, UIMAGE1DARRAY);
+uimage2DArray KEYWORD(130, 999, UIMAGE2DARRAY);
+image1DShadow KEYWORD(130, 999, IMAGE1DSHADOW);
+image2DShadow KEYWORD(130, 999, IMAGE2DSHADOW);
+image1DArrayShadow KEYWORD(130, 999, IMAGE1DARRAYSHADOW);
+image2DArrayShadow KEYWORD(130, 999, IMAGE2DARRAYSHADOW);
+imageBuffer KEYWORD(130, 999, IMAGEBUFFER);
+iimageBuffer KEYWORD(130, 999, IIMAGEBUFFER);
+uimageBuffer KEYWORD(130, 999, UIMAGEBUFFER);
+row_major KEYWORD(130, 999, ROW_MAJOR);
+
+[_a-zA-Z][_a-zA-Z0-9]* {
+ struct _mesa_glsl_parse_state *state = yyextra;
+ void *ctx = state;
+ yylval->identifier = ralloc_strdup(ctx, yytext);
+ return classify_identifier(state, yytext);
+ }
+
+. { return yytext[0]; }
+
+%%
+
+int
+classify_identifier(struct _mesa_glsl_parse_state *state, const char *name)
+{
+ if (state->symbols->get_variable(name) || state->symbols->get_function(name))
+ return IDENTIFIER;
+ else if (state->symbols->get_type(name))
+ return TYPE_IDENTIFIER;
+ else
+ return NEW_IDENTIFIER;
+}
+
+void
+_mesa_glsl_lexer_ctor(struct _mesa_glsl_parse_state *state, const char *string)
+{
+ yylex_init_extra(state, & state->scanner);
+ yy_scan_string(string, state->scanner);
+}
+
+void
+_mesa_glsl_lexer_dtor(struct _mesa_glsl_parse_state *state)
+{
+ yylex_destroy(state->scanner);
+}
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